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Finding the Fourth Proportional to 748.92, 1,033.50 and 487.44

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Solution

The fourth proportional to 748.92, 1,033.50 and 487.44 is: 672.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    748.92 : 1,033.50 = 487.44 : x
  2. Step 2: Convert to fraction form
    748.92/1,033.50 = 487.44/x
  3. Step 3: Cross multiply
    748.92x = 1,033.50 × 487.44
  4. Step 4: Simplify right side
    748.92x = 503,769.24
  5. Step 5: Solve for x
    x = 503,769.24/748.92
  6. Step 6: Final answer
    x = 672.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.